Sewingshields Castle (Simonburn) - Source of Reference
The information on this website is based on a range of published and unpublished works. Below is a list of the source of information used in writing this record.
(2) Hodgson, J.C. 1840. History of Northumberland 3, vol.2 (Newcastle), 386
(3) Haigh, D. and Savage, M. 1984. Archaeologia Aeliana (5th Series) 12, 71, no.20
(4) Long, B. 1967. Castles of Northumberland (Newcastle), 154.